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Methodological accuracy and noise error of antenna pattern retrieval through measurements in non-ideal conditions, being presented by convergent cluster of plane waves


Yu. I. Choni 1, I. Yu. Danilov 2

1 Kazan National Research Technical University named after A.N. Tupolev-KAI

2J SC Academician M.F. Reshetnev Information Satellite Systems


 The paper is received on December 12, 2015


Abstract. The paper discusses methodological aspects, computing peculiarities and technical factors with regard to their impact on the accuracy of antenna pattern retrieval through the data, measured in non-ideal environments. We mean any circumstances giving rise to differences between the field in the working area and the ideal plane wave in the first place, a rather short distance from the illuminating antenna. The pattern retrieval procedure is based on the illuminating field reconstruction in the form of a converging cluster of plane waves. It is obtained by processing the data from the probe that is moved along the boundary surface of the working area. With regard to the two-dimensional scalar tasks we investigate the stability of a pattern retrieval problem, potential accuracy and the influence the of measurement errors. In cases cylindrical or spherical illuminating wave, the resultant fields of converging cluster of plane waves inside and outside the working area are demonstrated. The evaluation of the achievable retrieval accuracy is presented.

Key words: antenna radiation pattern, converging cluster of plane waves, antenna measurement accuracy, reconstruction algorithm, stability, precision.